SMART-SERVICE 8 PECES ASSORTED COLOR Usb Led Book Reading Light Bulb for Laptop Pc Notebook,Camping Tent USB Light Bulb,Ball Bulb Shaped USB Powered Mini LED Night Light 8 PECES USB LED BULB LIGHT Plug and play, convenient and easy to use Supports powerd by mobile power bank Lightweight for ease of carryingIt is great for both indoor and outdoor use